Your Streaming Guide to Halloween Through the Decades (PHOTOS)

The Enterprise saw some strange new worlds but few as ghoulish as Pyris VII, with its telepathic warlock who may have cursed the ship. Best line in the 1967 hour: Kirk (William Shatner, above right) tells a puzzled Spock (Leonard Nimoy), “You’d be a natural” at trick-or-treating.

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’70s
HAPPY DAYS “Haunted” (Season 2, Episode 6)
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How can Richie (Ron Howard, above left, with Henry Winkler) and his pals make sure their Halloween shindig isn’t trashed by a gang called the Demons? By unexpectedly having it at an abandoned house — where some real demons may be hiding out — in this scare-aaay! 1974 episode.

Once the costumes are put away in this 1984 episode, the questions are: Will Frasier (Kelsey Grammer, above) lose his boo Diane (Shelley Long) to Sam (Ted Danson)? And does girl-shy Cliff (John Ratzenberger) have a ghost of a chance with his dream woman — minus his Ponce de León mask?

Treats abound at a holiday bash in this 2001 installment, from hoped-for hookups — Phoebe is bewitched by her twin’s fiancé (guest star Sean Penn) — to great getups like “Spud-nik,” courtesy of Ross (David Schwimmer, above, with Jennifer Aniston and Lisa Kudrow).

It’s toil and trouble for Buffy (Sarah Michelle Gellar, second from left, with Alyson Hannigan, Seth Green and Nicholas Brendon) when a demon is summoned at a party and the gang face their worst fears. FYI: The mansion in this 1999 outing doubled as American Horror Story’s Murder House.

Make that surprises: Leslie (Amy Poehler) helps frighten Jerry (Jim O’Heir) into a “fart attack,” only to be hit with her own shocking proposal from Ben (Adam Scott). And yes, that’s grumpy Ron (Nick Offerman) going door-to-door with two screaming kids in this 2012 episode.